Research and development of observation techniques for fish behavior and ecology under Antarctica sea ice

• Project/Area Number: 18H02262
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 40030:Aquatic bioproduction science-related
• Research Institution: Tokyo University of Marine Science and Technology
• Principal Investigator: Miyamoto Yoshiori 東京海洋大学, 学術研究院, 教授 (80251685)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000); Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2019: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2018: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
• Keywords: 超音波テレメトリー / 魚類 / 行動・生態 / 海氷下 / 凍結河川 / 超音波バイオテレメトリー / 多重反射 / 南極 / 行動 / 水中音響

Outline of Final Research Achievements

We conducted a performance verification of the ultrasonic telemetry system (Ultrasonic transmitter attached to fish: a receiver that receives the pin and its signal) under sea ice, which has not been sufficiently investigated so far, and is used for conducting behavioral and ecological observations of fish under sea ice in the Antarctic.
In particular, verification of the operating period at low temperatures. And we did verification and elucidation of whether accurate Pinger position can be measured by the influence of the sound reflected (multiple reflections) on the sea ice because the sea surface is covered with sea ice.

Academic Significance and Societal Importance of the Research Achievements

海水温度が低く、海面が海氷で覆われている環境における超音波テレメトリーの運用はこれまで行われたことが少ない。設置手法や海氷による反射の影響などを明らかにすることで、極限水域でのテレメトリーシステムの活用が見込まれる。低温下での魚類の行動・生態は不明な点が多く、地球温暖化などに大きく影響されることが予想されるので、本成果を活用することで、魚類の行動・生態の新たな知見を得られる可能性を示唆している。

Research Products

• [Journal Article] 2019 年1 月に北の浦（リュツォホルム湾・東南極）で 採集された魚類の記録 (2019)
  • Author(s): 西澤秀明・市川光太郎・浅井咲樹・荒井修亮・三田村啓理・宮本佳則・岩見哲夫
  • Journal Title: 南極資料 Volume: 63 Pages: 20-26
  • NAID: 120006773242
  • Peer Reviewed
• [Presentation] Behavior of the nototheniid fish, Trematomus spp., under the sea ice around the Syowa Station in Antarctica (2019)
  • Author(s): Kotaro Ichikawa, Hideaki Nishizawa, Saki Asai, Nobuaki Arai, Yoshinori Miyamoto
  • Organizer: the 5th International Conference on Fish Telemetry
  • Int'l Joint Research
• [Presentation] Behavioral observation of Trematomus bernacchii and T. pennellii by ultrasonic biotelemetry in the coastal area around Syowa Station, Antarctica (2019)
  • Author(s): Yoshinori Miyamoto, Kotaro Ichikawa, Hideaki Nishizawa, Saki Asai, Nobuaki Arai, Hiromichi Mitamura
  • Organizer: The Thirteenth Annual Meeting of Asian Fisheries Acoustics Society
  • Int'l Joint Research